The European Geostationary Navigation Overlay Service (EGNOS) is Europe’s Satellite-based Augmentation System (SBAS). Any application requiring more reliable and precise positioning than that provided by GPS or Galileo alone can benefit from EGNOS, which enhances reliability and integrity in positioning.
EGNOS supports a wide range of sectors, including agriculture helping farmers in aerial crop spraying or precision farming) and maritime transport (assisting ships manoeuvring in narrow channels). However, its primary application is in aviation, where it supports critical phases of flights such as take-off and landing.
EGNOS is an EU programme, managed and funded by the European Commission. ESA leads the design, development and qualification of the system. Since March 2011, EGNOS has been certified for Safety of Life operations, and today, it is used in virtually every European airport.
The EU Agency for the Space Programme (EUSPA) is responsible for the exploitation of EGNOS, with ESSP providing operational management and maintenance as the EGNOS service provider.
1-3
metre horizontal accuracy
3
geostationary satellites
45+
monitoring stations
500+
airports use EGNOS
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Discover EGNOS
The European Geostationary Navigation Overlay Service (EGNOS) is Europe’s Satellite-based Augmentation System (SBAS). It augments the signals from Global Navigation Satellite Systems (GNSS) to improve their accuracy, integrity and continuity so that they can be used for Safety of Life applications—operations where a malfunction of the system would lead to a major human or environmental catastrophe. EGNOS is used throughout Europe to help guide aeroplane landings in over 500 airports and helipads across 35 countries.
EGNOS provides the information needed to use navigation signals from GPS satellites for safety critical applications. It improves the accuracy of position measurements from a few metres to around one metre, informs users of the errors in the position measurements and warns of disruption to a satellite signal within six seconds.
The European Geostationary Navigation Overlay Service (EGNOS), Europe’s Satellite-based Augmentation System (SBAS), enhances the positioning data provided by GPS in Europe. It improves the accuracy of positioning measurements, informs users of errors in the positioning measurements and warns of disruptions to the satellite signals within six seconds. Its navigation signal is suitable for use by aircraft, ships, trains and other forms of transport.
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